This annual vetch species has a long history of cultivation in Eurasia and was likely introduced into North America for livestock forage. As is often the case, it has escaped cultivation and is now naturalized worldwide.  It has 1-2 pink/purple pea-like flowers without stalks (A,C), whereas the other possible vetches in our area have more flowers per cluster. The leaves have 5-6 pairs of leaflets, each with blunt ends, but with a sharp point at the tip (D). The leaves themselves end in tendrills which cling to other plants to form a thick mat (D,F). The fruit resembles a flat pea pod; it is shown (E), early in its development.